kapeec ubunts met aaraa erroru instaleejot skypu?

kad gribu ieinstaleet skypu man paraadaas
gdgdg@gdgdg-desktop:~$ apt-get update
E: Could not open lock file /var/lib/apt/lists/lock - open (13 Permission denied)
E: Unable to lock the list directory
gdgdg@gdgdg-desktop:~$ apt-get upgrade
E: Could not open lock file /var/lib/dpkg/lock - open (13 Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
gdgdg@gdgdg-desktop:~$ apt-get install skype
E: Could not open lock file /var/lib/dpkg/lock - open (13 Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
gdgdg@gdgdg-desktop:~$

arii citas programmas instaleejot paradaas dazhaadi errori!